From 2f7eac16467abd7f5a354ceea42af8502c0d5f21 Mon Sep 17 00:00:00 2001
From: Michael Brown
Date: Tue, 30 Jan 2007 12:17:03 +0000
Subject: Low-overhead filter streams

---
 src/include/gpxe/filter.h | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 src/include/gpxe/filter.h

(limited to 'src/include')

diff --git a/src/include/gpxe/filter.h b/src/include/gpxe/filter.h
new file mode 100644
index 000000000..585bbe15d
--- /dev/null
+++ b/src/include/gpxe/filter.h
@@ -0,0 +1,44 @@
+#ifndef _GPXE_FILTER_H
+#define _GPXE_FILTER_H
+
+/** @file
+ *
+ * Filter streams
+ */
+
+#include <gpxe/stream.h>
+
+/** A filter stream */
+struct filter_stream {
+	/** Upstream
+	 *
+	 * This is the end pointing towards the top-level application
+	 * (e.g. HTTP).
+	 */
+	struct stream_connection upstream;
+	/** Downstream
+	 *
+	 * This is the end pointing towards the bottom-level
+	 * connection (e.g. TCP).
+	 */
+	struct stream_application downstream;
+};
+
+extern void filter_connected ( struct stream_application *app );
+extern void filter_closed ( struct stream_application *app, int rc );
+extern void filter_senddata ( struct stream_application *app,
+			      void *data, size_t len );
+extern void filter_acked ( struct stream_application *app, size_t len );
+extern void filter_newdata ( struct stream_application *app,
+			     void *data, size_t len );
+
+extern int filter_bind ( struct stream_connection *conn,
+			 struct sockaddr *local );
+extern int filter_connect ( struct stream_connection *conn,
+			    struct sockaddr *peer );
+extern void filter_close ( struct stream_connection *conn );
+extern int filter_send ( struct stream_connection *conn,
+			 void *data, size_t len );
+extern int filter_kick ( struct stream_connection *conn );
+
+#endif /* _GPXE_FILTER_H */
-- 
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